J08E Second Hand Crankshaft For Excavator SK350 - 8 13411 - 2241
For Hino
Specification
| Product name: Engine crankshaft | Model Number: J08C J08E |
| Application: Excavator | Part number: 134112241 |
| Main Journal: 80 | valve: 24 valve |
| Road Journal: 65 | Number of Cylinders: 6 |
| Cooling: Water cooling | Injection: Electric Injection |
Description of Second Hand Crankshaft
What is a Crankshaft?
A crankshaft is a mechanical unit that transforms the reciprocating
movement of the piston into rotary motion. A crankshaft connects to
the piston through a connecting rod. The main objective of this
connecting rod is to receive reciprocating motion by the piston and
delivers it to the crankshaft.
As the crankshaft gets motion by the connecting rod, it transforms
this motion into rotary motion and rotates the flywheel, which
further moves the vehicle wheels.
Without a crank, a reciprocating engine is unable to deliver
piston’s reciprocating to the drive shaft. In simple words, a
reciprocating engine can’t move a vehicle without a crankshaft.
The crankshaft works on the crank mechanism. It is located inside
the block of the engine. The crank includes in the moving
components of the IC engine. It has many crankpins and cranks. The
engine connecting rod attaches with the crank through these
crankpins and cranks.
Components of Crankshaft
The major parts of the crankshaft are given below:
1. Main Journal
2. Crankshaft Pulley
3. Oil Passways
4. Balance Hole
5. Counterweight
6. Crankshaft Lubrication
Main Journal
The main bearing journal is attached to the block of the engine.
This engine block rotates around this journal. All crankshaft
journals are very hardened, rounded, and smooth. The main journal
secures in the saddle, where a replaceable bearing insert will be
placed.
The bearing is softer compared to the main journals, and these can
change when it wears. The bearing designs to capture a small volume
of impurities (if any) to prevent the crankshafts from damage.
Then main bearing cap screws onto the journal and tighten to the
particular torque.
The journal of the engine runs over the oil film. This oil film
pushes in the gap between the bearing and the journal via the
crankshaft saddle’s holes and the linking holes of the bearing
insert. If there are sufficient oil delivery and pressure, the
bearings and journals will not come into contact.
